//引用类型（数组，函数，对象）
let arr:number[]=[1,5,6]
let arr1:string[]=["ss","lk","yy"]

//接口
interface Per{
    name:string,
    age:number
}
let p1:Per={
    name:"yy",
    age:23
}
let p2:{name:string,age:number}={
    name:"yy",
    age:23
}